Heartburn

By Bernhard Kalhammer, Founder, Reflux Kitchen Reviewed by Uta Pittino, osteopath & nutrition-focused practitioner Updated August 17, 2026

Heartburn — that burning feeling behind the breastbone — is the most familiar symptom of acid reflux. The good news: what you eat, drink and when tends to make a real difference. These guides give you the honest, practical version, without pretending any single food is a cure.

In short

Heartburn happens when stomach acid rises into the esophagus. Eating smaller, milder, lower-fat meals, not lying down straight after eating, and noticing your own trigger foods usually helps more than cutting out whole food groups. The guides below cover the specifics.

Heartburn guides

Heartburn and acid reflux

Heartburn is a symptom; acid reflux is the underlying process. If your symptoms are frequent, it's worth taking a wider view than heartburn alone — our foods to avoid and foods to eat guides, a gentle meal plan, and the lifestyle changes that help most all apply to heartburn too.

General information, not medical advice or a treatment claim. If heartburn or reflux is frequent, severe or persistent, see a doctor.

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Frequently asked questions

What is heartburn?

Heartburn is the burning feeling behind the breastbone that happens when stomach acid rises into the esophagus. It's the most common symptom of acid reflux. Occasional heartburn is very common; frequent or severe heartburn is worth discussing with a doctor.

What is the difference between heartburn and acid reflux?

Acid reflux is the process — stomach contents flowing back up past the valve at the top of the stomach. Heartburn is one symptom of that reflux, the burning sensation many people feel. You can have reflux with other symptoms and not always feel classic heartburn.

What foods help heartburn the most?

Mild, lower-fat and lower-acid foods tend to be easiest: oatmeal and whole grains, bananas and melon, cooked vegetables, lean protein and low-fat or plant milk. See our foods that help heartburn guide for a fuller list, and remember reactions are individual.

How can I get rid of heartburn quickly?

For occasional heartburn, staying upright, sipping water, and avoiding lying down can help while it passes; over-the-counter antacids are a common short-term option. Frequent heartburn is better addressed with eating and lifestyle habits — and a doctor's input if it keeps happening.

Sources

This guide reflects widely accepted dietary and lifestyle guidance from established medical bodies. It is general information, not medical advice.

Foods to avoid · Foods to eat · Reflux diet · Recipes